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stemcells.go
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stemcells.go
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package director
import (
"encoding/json"
"fmt"
"net/http"
gourl "net/url"
urlhelper "github.com/cloudfoundry/bosh-cli/common/util"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
semver "github.com/cppforlife/go-semi-semantic/version"
)
type StemcellImpl struct {
client Client
name string
version semver.Version
currentlyDeployed bool
osName string
cpi string
cid string
}
func (s StemcellImpl) Name() string { return s.name }
func (s StemcellImpl) Version() semver.Version { return s.version }
func (s StemcellImpl) OSName() string { return s.osName }
func (s StemcellImpl) CID() string { return s.cid }
func (s StemcellImpl) CPI() string { return s.cpi }
func (s StemcellImpl) VersionMark(suffix string) string {
if s.currentlyDeployed {
return suffix
}
return ""
}
func (s StemcellImpl) Delete(force bool) error {
err := s.client.DeleteStemcell(s.name, s.version.String(), force)
if err != nil {
found, listErr := s.client.HasStemcell(s.name, s.version.String())
if found || listErr != nil {
return err
}
}
return nil
}
type StemcellResp struct {
Name string
Version string
OperatingSystem string `json:"operating_system"`
CID string `json:"cid"`
CPI string `json:"cpi"`
// Only used for determining if stemcell is deployed
Deployments []interface{}
}
type StemcellInfo struct {
Name string `json:"name"`
Version string `json:"version"`
}
func (d DirectorImpl) Stemcells() ([]Stemcell, error) {
resps, err := d.client.Stemcells()
if err != nil {
return nil, err
}
return transformStemcells(resps, d.client)
}
func transformStemcells(stemcellResponses []StemcellResp, client Client) ([]Stemcell, error) {
var stems []Stemcell
for _, resp := range stemcellResponses {
parsedVersion, err := semver.NewVersionFromString(resp.Version)
if err != nil {
return nil, bosherr.WrapErrorf(
err, "Parsing version for stemcell '%s/%s'", resp.Name, resp.Version)
}
stem := StemcellImpl{
client: client,
name: resp.Name,
version: parsedVersion,
currentlyDeployed: len(resp.Deployments) > 0,
osName: resp.OperatingSystem,
cpi: resp.CPI,
cid: resp.CID,
}
stems = append(stems, stem)
}
return stems, nil
}
func (d DirectorImpl) FindStemcell(slug StemcellSlug) (Stemcell, error) {
parsedVersion, err := semver.NewVersionFromString(slug.Version())
if err != nil {
return nil, bosherr.WrapErrorf(
err, "Parsing version for stemcell '%s/%s'", slug.Name(), slug.Version())
}
stem := StemcellImpl{
client: d.client,
name: slug.Name(),
version: parsedVersion,
}
return stem, nil
}
func (d DirectorImpl) StemcellNeedsUpload(stemcells StemcellInfo) (bool, error) {
return d.client.StemcellNeedsUpload(stemcells)
}
func (d DirectorImpl) UploadStemcellURL(url, sha1 string, fix bool) error {
return d.client.UploadStemcellURL(url, sha1, fix)
}
func (d DirectorImpl) UploadStemcellFile(file UploadFile, fix bool) error {
return d.client.UploadStemcellFile(file, fix)
}
func (c Client) Stemcells() ([]StemcellResp, error) {
var resps []StemcellResp
err := c.clientRequest.Get("/stemcells", &resps)
if err != nil {
return resps, bosherr.WrapErrorf(err, "Finding stemcells")
}
return resps, nil
}
func (c Client) HasStemcell(name, version string) (bool, error) {
resps, err := c.Stemcells()
if err != nil {
return false, err
}
for _, r := range resps {
if r.Name == name && r.Version == version {
return true, nil
}
}
return false, nil
}
func (c Client) StemcellNeedsUpload(stemcells StemcellInfo) (bool, error) {
setHeaders := func(req *http.Request) {
req.Header.Add("Content-Type", "application/json")
}
jsonBody, err := json.Marshal(map[string]StemcellInfo{"stemcell": stemcells})
if err != nil {
return false, err
}
var parsedResponse struct {
Needed bool
}
err = c.clientRequest.Post("/stemcell_uploads", jsonBody, setHeaders, &parsedResponse)
if err != nil {
return false, bosherr.WrapErrorf(err, "Finding stemcells")
}
return parsedResponse.Needed, nil
}
func (c Client) UploadStemcellURL(url, sha1 string, fix bool) error {
if len(url) == 0 {
return bosherr.Error("Expected non-empty URL")
}
query := gourl.Values{}
if fix {
query.Add("fix", "true")
}
path := "/stemcells?" + query.Encode()
body := map[string]string{"location": url}
if len(sha1) > 0 {
body["sha1"] = sha1
}
reqBody, err := json.Marshal(body)
if err != nil {
return bosherr.WrapErrorf(err, "Marshaling request body")
}
setHeaders := func(req *http.Request) {
req.Header.Add("Content-Type", "application/json")
}
_, err = c.taskClientRequest.PostResult(path, reqBody, setHeaders)
if err != nil {
return bosherr.WrapErrorf(err, "Uploading remote stemcell '%s'", urlhelper.RedactBasicAuth(url))
}
return nil
}
func (c Client) UploadStemcellFile(file UploadFile, fix bool) error {
fileInfo, err := file.Stat()
if err != nil {
return bosherr.WrapErrorf(err, "Determining stemcell file size")
}
query := gourl.Values{}
if fix {
query.Add("fix", "true")
}
path := "/stemcells?" + query.Encode()
setHeadersAndBody := func(req *http.Request) {
req.Header.Add("Content-Type", "application/x-compressed")
req.ContentLength = fileInfo.Size()
req.Body = file
}
_, err = c.taskClientRequest.PostResult(path, nil, setHeadersAndBody)
if err != nil {
return bosherr.WrapErrorf(err, "Uploading stemcell file")
}
return nil
}
func (c Client) DeleteStemcell(name, version string, force bool) error {
query := gourl.Values{}
if force {
query.Add("force", "true")
}
path := fmt.Sprintf("/stemcells/%s/%s?%s", name, version, query.Encode())
_, err := c.taskClientRequest.DeleteResult(path)
if err != nil {
return bosherr.WrapErrorf(err, "Deleting stemcell '%s/%s'", name, version)
}
return nil
}